Computing device display screen with graphical user interface for generating an omni-channel message



The sole FIGURE is a front view of the computing device display screen with graphical user interface for generating an omni-channel message showing the new design.

The evenly spaced broken lines showing portions of the graphical user interface form no part of the claimed design. The dot-ash line showing the display screen form no part of the claimed design. 

CLAIM The ornamental design for a computing device display screen with graphical user interface for generating an omni-channel message, as shown and described. 